Re: Memory deallocation after calling cast function

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От Andres Freund
Тема Re: Memory deallocation after calling cast function
Дата
Msg-id 20140617154241.GD6836@awork2.anarazel.de
обсуждение исходный текст
Ответ на Re: Memory deallocation after calling cast function  (Abhijit Menon-Sen <ams@2ndquadrant.com>)
Ответы Re: Memory deallocation after calling cast function
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On 2014-06-17 21:09:25 +0530, Abhijit Menon-Sen wrote:
> At 2014-06-17 11:32:37 -0400, bruce@momjian.us wrote:
> >
> > > SRFs in the SELECT targetlist tend to leak memory; this is not easily
> > > fixable, and nobody is likely to try hard considering the feature's on
> > > the edge of deprecation anyhow.
> > 
> > Uh, what is replacing SRFs?  CTEs?
> 
> I don't think Tom was referring to SRFs in general, only putting them
> directly into the targetlist of a SELECT.

And the primary reason for using SRFs in the targetlist has gone away
due to LATERAL. It's now possible to pass data from tables to a SRF,
that previously wasn't possibly unless you'd used a SRF in the targetlist.

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
Services



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